Crystalline forms of [3-(4-  -phenoxy)-propyl]-diethyl-amine

ABSTRACT

The present invention relates to crystalline forms of [3-(4-{2-butyl-1-[4-(4-chloro-phenoxy)-phenyl]-1H-imidazol-4-yl}-phenoxy)-propyl]-diethylamine (“COMPOUND I”) useful in the treatment of RAGE mediated diseases.

CROSS REFERENCE TO RELATED APPLICATIONS

The present application claims the benefit of priority under 35 USC119(e) from U.S. Provisional Application No. 60/921,964, filed Apr. 5,2007, and from U.S. Provisional Application No. 60/925,786, filed Apr.23, 2007, the disclosure of which are herein incorporated by referencein their entirety.

FIELD OF THE INVENTION

The present invention relates to crystalline forms of[3-(4-{2-butyl-1-[4-(4-chloro-phenoxy)-phenyl]-1H-imidazol-4-yl}-phenoxy)-propyl]-diethylamine(“COMPOUND I”), and its use as a therapeutic agent.

BACKGROUND OF THE INVENTION

The Receptor for Advanced Glycation Endproducts (RAGE) is a member ofthe immunoglobulin super family of cell surface molecules. Activation ofRAGE in different tissues and organs leads to a number ofpathophysiological consequences. RAGE has been implicated in a varietyof conditions including: acute and chronic inflammation (Hofmann et al.,Cell 97:889-901 (1999)), the development of diabetic late complicationssuch as increased vascular permeability (Wautier et al., J. Clin.Invest. 97:238-243 (1995)), nephropathy (Teillet et al., J. Am. Soc.Nephrol. 11: 1488-1497 (2000)), atherosclerosis (Vlassara et. al., TheFinnish Medical Society DUODECIM, Ann. Med. 28:419-426 (1996)), andretinopathy (Hammes et al., Diabetologia 42:603-607 (1999)). RAGE hasalso been implicated in Alzheimer's disease (Yan et al., Nature 382:685-691, (1996)), erectile dysfunction, and in tumor invasion andmetastasis (Taguchi et al., Nature 405: 354-357, (2000)).

Binding of ligands such as advanced glycation endproducts (AGEs),S100/calgranulin/EN-RAGE, β-amyloid, CML (N^(ε)-Carboxymethyl lysine),and amphoterin to RAGE has been shown to modify expression of a varietyof genes. For example, in many cell types interaction between RAGE andits ligands generates oxidative stress, which thereby results inactivation of the free radical sensitive transcription factor NF-κB, andthe activation of NF-κB regulated genes, such as the cytokines IL-1β,TNF-α, and the like. In addition, several other regulatory pathways,such as those involving p21 ras.

MAP kinases, ERK1 and ERK2, have been shown to be activated by bindingof AGEs and other ligands to RAGE. In fact, transcription of RAGE itselfis regulated at least in part by NF-κB. Thus, an ascending, and oftendetrimental, spiral is fueled by a positive feedback loop initiated byligand binding. Antagonizing binding of physiological ligands to RAGE,therefore, is our target, for down-regulation of the pathophysiologicalchanges brought about by excessive concentrations of AGEs and otherligands for RAGE.

Thus, there is a need for the development of compounds andpharmaceutical composition that antagonize binding of physiologicalligands to RAGE.

SUMMARY OF THE INVENTION

The preparation of[3-(4-{2-butyl-1-[4-(4-chloro-phenoxy)-phenyl]-1H-imidazol-4-yl}-phenoxy)-propyl]-diethyl-amine(“COMPOUND I”) and the use thereof, such as an antagonist of thereceptor for advanced glycation endproducts (RAGE) and in the treatmentof various medical conditions, are described in US Patent PublicationNo. 2004-0082542 and in US Patent Publication No. 2005-0026811, hereinincorporated by reference in their entirety. Such diseases or diseasestates may include, but are not limited to, acute and chronicinflammation, amyloidosis, Alzheimer's disease, cancer, tumor invasionand metastasis, kidney failure, or inflammation associated withautoimmunity, inflammatory bowel disease, rheumatoid arthritis,psoriasis, multiple sclerosis, hypoxia, stroke, heart attack,hemorrhagic shock, sepsis, organ transplantation, the development ofdiabetic late complications such as increased vascular permeability,diabetic nephropathy, diabetic retinopathy, a diabetic foot ulcer, acardiovascular complication, diabetic neuropathy, impaired woundhealing, erectile dysfunction, and osteoporosis. COMPOUND I and itspreparation are exemplified in US Patent Publication No. 2004-0082542 inExample 406.

In one aspect, the present invention provides polymorphic forms ofCOMPOUND I. In one embodiment, the present invention provides a firstpolymorph, Form I, of COMPOUND I. In another embodiment, the presentinvention provides a second polymorph, Form II, of COMPOUND I. Inanother aspect, the present invention provides a method for producing apolymorph of COMPOUND I.

In another aspect, the present invention provides a pharmaceuticalcomposition comprising one or more polymorphic forms of COMPOUND I.

In another aspect, the present invention provides a method of producinga pharmaceutical composition comprising one or more polymorphic forms ofCOMPOUND I.

In another aspect, the present invention provides a method of treatingone or more RAGE mediated diseases comprising administering one or morepolymorphic forms of COMPOUND I to a subject in need thereof.Embodiments of the method of treatment of the present invention maycomprise administering a pharmaceutical composition comprising atherapeutically effective amount of one or more polymorphs of COMPOUND I

These and other embodiments of the present invention are described ingreater detail in the detailed description of the invention whichfollows.

BRIEF DESCRIPTION OF DRAWINGS

FIG. 1 is a Powder X-ray Powder Diffraction Pattern of Form I.

FIG. 2 is a Powder X-ray Powder Diffraction Pattern of Form II.

FIG. 3 is a SSNMR spectrum of Form I.

FIG. 4 is a SSNMR spectrum of Form II.

FIG. 5 is a FT-IR spectrum of Form I.

FIG. 6 is a FT-IR spectrum of Form II.

FIG. 7 is a Raman spectrum of Form I.

FIG. 8 is a Raman spectrum of Form II.

FIG. 9 is a thermogravimetric analysis of a polymorph of Form I.

FIG. 10 is a thermogravimetric analysis of a polymorph of Form II.

DETAILED DESCRIPTION

Notwithstanding that the numerical ranges and parameters setting forththe broad scope of the invention are approximations, the numericalvalues set forth in the specific examples are reported as precisely aspossible. Any numerical value, however, inherently contains certainerrors necessarily resulting from the standard deviation found in theirrespective testing measurements. Moreover, all ranges disclosed hereinare to be understood to encompass any and all subranges subsumedtherein. For example, a stated range of “1 to 10” should be consideredto include any and all subranges between (and inclusive of) the minimumvalue of 1 and the maximum value of 10; that is, all subranges beginningwith a minimum value of 1 or more, e.g. 1 to 6.1, and ending with amaximum value of 10 or less, e.g., 5.5 to 10. Additionally, anyreference referred to as being “incorporated herein” is to be understoodas being incorporated in its entirety.

By percent by weight it is meant that a particular weight of oneingredient in a composition is divided by the total weight of all of theingredients in that composition. Percent by weight may be usedinterchangeably and means approximately the same as weight/weightpercent or % (weight/weight) or percent by mass or mass percent. When aliquid solute is used, it is often more practical to use volume/volumepercent or % (vol/vol) or percent by volume, which are all considered tobe synonymous. Ppm (parts per million), ppb (parts per billion), pph(parts per hundred) are often used to indicate a percentage based onquantity and not on mass (i.e., the quantity of a given type of atom ora given type of molecule in a composition with more atoms or molecules(be it gas, liquid or solid) is divided by the total quantity of atomsor molecules in the total composition). Other terms that are used aremolarity, which is the number of moles of solute per liters of solution,and molality, which is the number of moles of solution per kilograms ofsolution. Another concentration unit is the mole fraction, which is themoles of a given component divided by the total moles of all solutioncomponents. Mole percent is related to the mole fraction and is the molefraction multiplied by 100.

It is further noted that, as used in this specification, the singularforms “a,” “an,” and “the” include plural referents unless expressly andunequivocally limited to one referent.

The term “RAGE mediated disease” is used herein to refer to one or moreof the following conditions, diseases or disease states including, butare not limited to, acute or chronic inflammation including skininflammation such as psoriasis, rheumatoid arthritis, atopic dermatitisand lung inflammation including, asthma and chronic obstructivepulmonary disease, diabetes, diabetes related complications, renalfailure, hyperlipidemic atherosclerosis associated with diabetes,neuronal cytotoxicity, restenosis, Down's syndrome, dementia associatedwith head trauma, amyotrophic lateral sclerosis, multiple sclerosis,amyloidosis, an autoimmune disease including inflammation associatedwith autoimmunity or organ, tissue, or cell transplant, impaired woundhealing, periodontal disease, neuropathy, neuronal degeneration,vascular permeability, nephropathy, atherosclerosis, retinopathy,Alzheimer's disease, erectile dysfunction, tumor invasion and/ormetastasis, osteoporosis, and the development of diabetic latecomplications such as increased vascular permeability, nephropathy,retinopathy, and neuropathy. The pharmaceutical compositions comprisinga polymorphic form of COMPOUND I also may be used to antagonize RAGE ina subject.

The term “therapeutically effective amount” is used herein to denote theamount of the polymorph of COMPOUND I that will elicit the therapeuticresponse of a subject that is being sought. In an embodiment, thetherapeutic response may be antagonizing RAGE.

As used herein, a first polymorphic form that is “substantially free” ofa second polymorphic form includes the complete absence of the secondform or an amount of the second form that is not readily detectable byordinary analytical methods. Such ordinary analytical methods includethose analytical methods used to characterize Form I and Form II herein:DSC, solid state ¹³C NMR, Raman, X-ray powder diffraction, mid-IR (suchas FT-IR) and near-IR. In an embodiment, an amount of a polymorphic formthat is not readily detectable by one or more ordinary analyticalmethods is less than 5 percent by weight. In another embodiment, theamount of a polymorphic form that is not readily detectable by one ormore ordinary analytical methods is less than 3 percent by weight. Inanother embodiment, the amount of a polymorphic form that is not readilydetectable by one or more ordinary analytical methods is less than 2percent by weight. In another embodiment, the amount of a polymorphicform that is not readily detectable by one or more ordinary analyticalmethods is less than 1 percent by weight. In another embodiment, theamount of a polymorphic form that is not readily detectable by one ormore ordinary analytical methods is less than 0.5 percent by weight.

In another embodiment, the dosage or blood level of COMPOUND I andadministration may be sufficient for inhibition of the biologicalfunction of RAGE at a sufficient level for sufficient time to reverseamyloidosis.

A therapeutically effective amount may be achieved in a subject byadministering a dosage level of less 100 mg of compound per day. Inanother embodiment, the dosage level of administration is greater than 1mg of compound per day. In another embodiment, the dosage level ofadministration is 5, 10 or 20 mg of compound per day.

The term “treatment” as used herein, refers to the full spectrum oftreatments for a given condition or disorder from which a subject issuffering, including alleviation or amelioration of one or more of thesymptoms resulting from that disorder, to the delaying of the onset orprogression of the disorder.

In one aspect, the present invention provides polymorphic forms ofCOMPOUND I.

In one embodiment, the present invention provides Form I of COMPOUND I,having a solid state ¹³C NMR spectrum comprising peaks at 149.7 and141.0 ppm.

In another embodiment, the present invention provides Form I of COMPOUNDI, having a solid state ¹³C NMR spectrum comprising peaks at 153.0,149.7, 141.0, 27.6, and 13.9 ppm.

In another embodiment, the present invention provides Form I of COMPOUNDI, having a solid state ¹³C NMR spectrum comprising peaks at 157.9,153.0, 149.7, 141.0, 131.4, 33.8, 27.6, and 13.9 ppm.

In another embodiment, the present invention provides Form I of COMPOUNDI, having X-ray powder diffraction peaks expressed in degrees-2θ at 16.5and 26.8.

In another embodiment, the present invention provides Form I of COMPOUNDI, having a having X-ray powder diffraction peaks expressed indegrees-2θ at 13.1, 16.5, 22.4 and 26.8.

In another embodiment, the present invention provides Form I of COMPOUNDI, having a solid state ¹³C NMR spectrum comprising peaks at 149.7 and141.0 ppm and having an IR spectrum comprising peaks at 1016 and 1223cm⁻¹.

In another embodiment, the present invention provides Form I of COMPOUNDI, having a solid state ¹³C NMR spectrum comprising peaks at 149.7 and141.0 ppm and having a Raman spectrum comprising peaks at 335 and 787cm⁻¹.

In another embodiment, the present invention provides Form I of COMPOUNDI, having X-ray powder diffraction peaks expressed in degrees-2θ at 16.5and 26.8 and having an IR spectrum comprising peaks at 1016 and 1223cm⁻¹.

In another embodiment, the present invention provides Form I of COMPOUNDI, having X-ray powder diffraction peaks expressed in degrees-2θ at 16.5and 26.8 and having a Raman spectrum comprising peaks at 335 and 787cm⁻¹.

In another embodiment, the present invention provides Form I of COMPOUNDI, having a solid state ¹³C NMR spectrum comprising peaks at 149.7 and141.0 ppm and having an IR spectrum comprising peaks at 697, 870, 1016and 1223 cm⁻¹.

In another embodiment, the present invention provides Form I of COMPOUNDI, having a solid state ¹³C NMR spectrum comprising peaks at 149.7 and141.0 ppm and having a Raman spectrum comprising peaks at 266, 293, 335,653, 787 and 1497 cm⁻¹.

In another embodiment, the present invention provides Form I of COMPOUNDI, having X-ray powder diffraction peaks expressed in degrees-2θ at 16.5and 26.8 and having an IR spectrum comprising peaks at 697, 870, 1016and 1223 cm⁻¹.

In another embodiment, the present invention provides Form I of COMPOUNDI, having X-ray powder diffraction peaks expressed in degrees-2θ at 16.5and 26.8 and having a Raman spectrum comprising peaks at 266, 293, 335,653, 787 and 1497 cm⁻¹.

In another embodiment, the present invention provides Form I of COMPOUNDI, having a Raman spectrum comprising peaks at 335 and 787 cm⁻¹.

In another embodiment, the present invention provides Form I of COMPOUNDI, having a Raman spectrum comprising peaks at 266, 293, 335, 653, 787and 1497 cm⁻¹.

In another embodiment, the present invention provides Form I of CompoundI substantially free of Form II.

In another embodiment, the present invention provides a form of CompoundI, which may be a crystalline form, comprising 50, 55, 60, 65, 70, 75,80, 85, 90, 91, 92, 93, 94, 95, 96, 97, 98, or 99% or more by weight ofForm I.

In another embodiment, the present invention provides Form II ofCOMPOUND I, having a solid state ¹³C NMR spectrum comprising peaks at153.6, 140.1 and 119.9 ppm.

In another embodiment, the present invention provides Form II ofCOMPOUND I, having a solid state ¹³C NMR spectrum comprising peaks at153.6, 149.0, 140.1, 119.9, and 28.6 ppm.

In another embodiment, the present invention provides Form II ofCOMPOUND I, having a solid state ¹³C NMR spectrum comprising peaks at153.6, 149.0, 140.1, 123.2, 121.6, 119.9, and 28.6 ppm.

In another embodiment, the present invention provides Form II ofCOMPOUND I, having X-ray powder diffraction peaks expressed indegrees-2θ at 18.8 and 20.1.

In another embodiment, the present invention provides Form II ofCOMPOUND I, having a solid state ¹³C NMR spectrum comprising peaks at153.6, 140.1 and 119.9 ppm and having an IR spectrum having peaks at816, 1046 and 1178 cm⁻¹.

In another embodiment, the present invention provides Form II ofCOMPOUND I, having X-ray powder diffraction peaks expressed indegrees-2θ at 18.8 and 20.1 and having an IR spectrum comprising peaksat 816, 1046 and 1178 cm⁻¹.

In another embodiment, the present invention provides Form II ofCOMPOUND I, having a solid state ¹³C NMR spectrum comprising peaks at153.6, 140.1 and 119.9 ppm and having a Raman spectrum having peaks at300 and 1180 cm⁻¹.

In another embodiment, the present invention provides Form II ofCOMPOUND I, having X-ray powder diffraction peaks expressed indegrees-2θ at 18.8 and 20.1 and having a Raman spectrum comprising peaksat 300 and 1180 cm⁻¹.

In another embodiment, the present invention provides Form II ofCOMPOUND I, having a solid state ¹³C NMR spectrum comprising peaks at153.6, 140.1 and 119.9 ppm and having an IR spectrum comprising peaks at660, 707, 735, 816, 969, 1024, 1046, 1135 and 1178 cm⁻¹.

In another embodiment, the present invention provides Form II ofCOMPOUND I, having X-ray powder diffraction peaks expressed indegrees-2θ at 18.8 and 20.1 and having an IR spectrum comprising peaksat 660, 707, 735, 816, 969, 1024, 1046, 1135 and 1178 cm⁻¹.

In another embodiment, the present invention provides Form II ofCOMPOUND I, having a solid state ¹³C NMR spectrum comprising peaks at153.6, 140.1 and 119.9 ppm and having a Raman spectrum comprising peaksat 257, 300, 326, 590, 646, 1180, 1348 and 1370 cm⁻¹.

In another embodiment, the present invention provides Form II ofCOMPOUND I, having X-ray powder diffraction peaks expressed indegrees-2θ at 18.8 and 20.1 and having a Raman spectrum comprising peaksat 257, 300, 326, 590, 646, 1180, 1348 and 1370 cm⁻¹.

In another embodiment, the present invention provides Form II ofCOMPOUND I, having a Raman spectrum comprising peaks at 300 and 1180cm⁻¹.

In another embodiment, the present invention provides Form II ofCOMPOUND I, having a Raman spectrum comprising peaks at 257, 300, 326,590, 646, 1180, 1348 and 1370 cm⁻¹.

In another embodiment, the present invention provides Form II ofCompound I substantially free of Form I.

In another embodiment, the present invention provides a form of CompoundI, which may be a crystalline form, comprising 50, 55, 60, 65, 70, 75,80, 85, 90, 91, 92, 93, 94, 95, 96, 97, 98, or 99% or more by weight ofForm II.

In another embodiment, the present invention provides a form of CompoundI, which may be a crystalline form, comprising a mixture of Form I andForm II. The ratio of Form I to Form II by weight may be between 9:1 and1:9, respectively. In an embodiment, the ratio by weight of Form I toForm II is 9:1, 8:2, 7:3, 6:4, 5:5, 4:6, 3:7, 2:8, or 1:9.

For all embodiments disclosed herein, a peak positional reproducibilityis associated with the values of degree-20 (XRPD), ppm (¹³C solid stateNMR), and cm⁻¹ (IR and Raman). Accordingly, it will be understood thatall peaks disclosed herein have the value disclosed±the peak positionalreproducibility associated with each analytical technique. The XRPD peakpositional reproducibility is ±0.2 expressed in degree-20. The ¹³C NMRpeak positional reproducibility is ±0.2 ppm. The IR peak positionalreproducibility is ±2 cm⁻¹. The Raman peak positional reproducibility is±2 cm⁻¹.

COMPOUND I and its preparation are exemplified in US Patent PublicationNo. 2004-0082542 in Example 406. An additional method to prepareCOMPOUND I is described in the EXAMPLES section below.

In another aspect, the present invention provides a method for producinga polymorph of COMPOUND I. In an embodiment, the method of producing apolymorph of COMPOUND I comprises: heating COMPOUND I until formation ofa liquid phase in a partial vacuum for a period; cooling COMPOUND I tobelow the temperature at which the liquid phase is formed. In anembodiment, COMPOUND I is heated to about 70° C. In another embodiment,COMPOUND I is cooled to room temperature. In another embodiment, thepolymorph produced by this method is Form I. In another embodiment,COMPOUND I is precipitated from hexanes, then dissolved in ethyl acetateand followed by removal of ethyl acetate by heating above thetemperature at which a liquid phase is formed.

In another embodiment, the present invention provides a method forproducing a polymorph of COMPOUND I comprising: dissolving COMPOUND I ina solvent system comprising an alcoholic solvent, adding a precipitatingsolvent to the solvent system such that COMPOUND I precipitates from thesolvent system, and recovering the precipitate from the solvent system.An alcoholic solvent is a solvent having 1 to 8 carbons and at least one—OH group and including, but not limited to, methanol, ethanol,isopropanol, n-butanol, tert-butanol, sec-butyl alcohol, furfurylalcohol, tetrahydrofurfuryl alcohol, and polyhydric alcohols, such asethylene glycol, and mixtures thereof. In an embodiment, the alcoholicsolvent is selected from the group consisting of: methanol, ethanol,isopropanol, and mixtures thereof. In another embodiment, theprecipitating solvent system comprises water. In another embodiment, thepolymorph produced by this method is Form II. In another embodiment, thestep of dissolving comprises heating the solvent system. The solventsystem may be heated to a temperature above ambient temperature up toand including refluxing temperature.

In another embodiment, the step of recovering the precipitate from thesolvent system comprises cooling the solvent system. The solvent systemmay be cooled to below about 0° C. In another embodiment, the method mayfurther comprise the step of heating the collected precipitate to atemperature in a partial vacuum for a period, wherein the temperature isno greater than the temperature at which a liquid phase is formed.

To ensure no chemical transformation or degradation has occurred, thepurity of each polymorph may be confirmed using HPLC and thencharacterized by its physio-chemical properties such as DSC, X-raypowder diffraction, infrared spectrum, Raman spectrum, and/or solidstate ¹³C NMR.

In another aspect, the present invention provides pharmaceuticalcompositions comprising one or more polymorphic forms of COMPOUND I. Inone embodiment, a pharmaceutical composition comprises Form I ofCOMPOUND I and a pharmaceutically acceptable excipient, diluent,carrier, or mixture thereof. In another embodiment, a pharmaceuticalcomposition comprises Form II of COMPOUND I and a pharmaceuticallyacceptable excipient, diluent, carrier, or mixture thereof. In anotherembodiment, a pharmaceutical composition comprises Form I and Form II ofCOMPOUND I and a pharmaceutically acceptable excipient, diluent,carrier, or mixture thereof.

In another aspect, the present invention also provides methods ofproducing a pharmaceutical composition comprising Form I and/or Form IIof COMPOUND I. In one embodiment, a method of producing a pharmaceuticalcomposition comprises combining Form I of COMPOUND I with apharmaceutically acceptable excipient, diluent, carrier, or a mixturethereof. In another embodiment, a method for producing a pharmaceuticalcomposition comprises combining Form II of COMPOUND I with apharmaceutically acceptable excipient, diluent, carrier, or a mixturethereof. In another embodiment, a method for producing a pharmaceuticalcomposition may comprise combining Form I and Form II of COMPOUND I witha pharmaceutically acceptable excipient, diluent, carrier, or a mixturethereof.

Pharmaceutical compositions of the present invention comprising a FormI, Form II, or mixtures thereof of COMPOUND I may be in a form suitablefor oral use, for example, as tablets, troches, lozenges, dispersiblepowders or granules, or hard or soft capsules. Compositions intended fororal use may be prepared according to any known method, and suchcompositions may contain one or more agents selected from the groupconsisting of sweetening agents, flavoring agents, coloring agents, andpreserving agents in order to provide pharmaceutically elegant andpalatable preparations.

Tablets, tronches, lozenges, dispersible powders or granules, or hard orsoft capsules may contain one or more polymorphs of COMPOUND I inadmixture with non-toxic pharmaceutically-acceptable excipients whichare suitable for the manufacture of such tablets, tronches, lozenges,dispersible powders or granules, or hard or soft capsules. Theseexcipients may be for example, inert diluents, such as calciumcarbonate, sodium carbonate, lactose, microcrystalline cellulose,calcium phosphate or sodium phosphate; granulating and disintegratingagents, for example corn starch, croscarmelose sodium, or alginic acid;binding agents, for example, starch, gelatin or acacia; and lubricatingagents or glidants, for example magnesium stearate, stearic acid,colloidal silicon dioxide, or talc. Hard gelatin capsules may includeone or more polymorphs of COMPOUND I in combination with an inert solidexcipient, diluent, carrier, or mixture thereof.

A “pharmaceutically acceptable carrier, diluent, or excipient” is amedium generally accepted in the art for the delivery of biologicallyactive agents to mammals, e.g., humans. Such carriers are generallyformulated according to a number of factors well within the purview ofthose of ordinary skill in the art to determine and account for. Theseinclude, without limitation, the type and nature of the active agentbeing formulated; the subject to which the agent-containing compositionis to be administered; the intended route of administration of thecomposition; and the therapeutic indication being targeted.Pharmaceutically acceptable carriers and excipients include both aqueousand non-aqueous liquid media, as well as a variety of solid andsemi-solid dosage forms. Such carriers can include a number of differentingredients and additives in addition to the active agent, suchadditional ingredients being included in the formulation for a varietyof reasons, e.g., stabilization of the active agent, well known to thoseof ordinary skill in the art. Descriptions of suitable pharmaceuticallyacceptable carriers, and factors involved in their selection, are foundin a variety of readily available sources, e.g., Remington'sPharmaceutical Sciences, 17th ed., Mack Publishing Company, Easton, Pa.1985, the contents of which are incorporated herein by reference.

In another embodiment, the present invention also providespharmaceutical compositions comprising a therapeutically effectiveamount of COMPOUND I wherein a therapeutically effective amount ofCOMPOUND I comprises a sufficient amount for the treatment of a RAGEmediated disorder. In another embodiment, the present invention alsoprovides pharmaceutical compositions comprising a therapeuticallyeffective amount of COMPOUND I wherein a therapeutically effectiveamount of COMPOUND I comprises a sufficient amount for the prevention ofa RAGE mediated disorder. In another embodiment, a pharmaceuticalcomposition may comprise a therapeutically effective amount of Form I ofCOMPOUND I. In another embodiment, a pharmaceutical composition maycomprise a therapeutically effective amount of Form II of COMPOUND I. Inanother embodiment, a pharmaceutical composition may comprise atherapeutically effective amount of a mixture of Form I and Form II ofCOMPOUND I.

In another aspect, the present invention provides a method for treatinga RAGE mediated disease comprising administering one or more polymorphicforms of COMPOUND I to a subject in need thereof. The method maycomprise administering a pharmaceutical composition comprising atherapeutically effective amount of COMPOUND I to a subject in needthereof.

A pharmaceutical composition of the present invention may beadministered at a dosage level of less than 100 mg of compound per day.In another embodiment, the dosage level of administration is greaterthan 1 mg of compound per day. The amount of active ingredient that maybe combined with the carrier materials to produce a single dosage willvary depending upon the host treated and the particular mode ofadministration. For example, in one non-limiting embodiment, a dosageunit forms, such as a tablet or capsule, intended for oraladministration to humans may contain less than 100 mg of COMPOUND I withan appropriate and convenient amount of carrier material. In anotherembodiment, the dosage level of administration is greater than 1 mg ofcompound per day. In another embodiment, the dosage level ofadministration is 5, 10 or 20 mg of compound per day.

The dosage may be individualized by the clinician based on the specificclinical condition of the subject being treated. Thus, it will beunderstood that the specific dosage level for any particular subjectwill depend upon a variety of factors including the activity of thespecific compound employed, the age, body weight, general health, sex,diet, time of administration, route of administration, rate ofexcretion, drug combination and the severity of the particular diseaseundergoing therapy.

EXAMPLES Analytical Methods X-Ray Powder Diffraction Analysis

The X-ray powder diffraction patterns of Form I and Form II were carriedout on a Bruker D5000 diffractometer using copper radiation (wavelength:1.54056 Å). The tube voltage and amperage were set to 40 kV and 40 mA,respectively. The divergence and scattering slits were set at 1 mm, andthe receiving slit was set at 0.6 mm. Diffracted radiation was detectedby a Kevex PSI detector. A theta-two theta continuous scan at 2.4°/min(1 sec/0.04° step) from 3.0 to 40° 2θ was used. An alumina standard wasanalyzed to check the instrument alignment. Data were collected andanalyzed using Bruker axis software Version 7.0. Samples were preparedby placing them in a quartz holder. Eva Application 7.0.0.1 software wasused to visualize and evaluate XRPD spectra. XRPD data files (.raw) werenot processed prior to peak searching. Generally, a Threshold value of 1and a Width value of 0.3 were used to make preliminary peak assignments.The output of automated assignments was visually checked to ensurevalidity and adjustments manually made if necessary.

The XRPD peak positional reproducibility is +0.2 expressed in degree-20.

Solid-State Nuclear Resonance Spectroscopy

¹³C SSNMR Method: Approximately 80 mg of sample was tightly packed intoa 4 mm ZrO spinner. The spectra were collected at low temperature(nominally at 270 K; to compensate for frictional heating due tospinning) and pressure on a Bruker-Biospin 4 mm BL triple resonanceCPMAS probe positioned into a wide-bore Bruker-Biospin Avance DSX 500MHz NMR spectrometer. The sample was positioned at the magic angle andspun at 15.0 kHz to minimize the intensities of the spinning side bands.The number of scans was adjusted to obtain adequate signal to noiseratio.

The ¹³C solid state spectrum was collected using a proton decoupledcross-polarization magic angle spinning experiment (CPMAS). A protondecoupling field of approximately 90 kHz was applied. Thecross-polarization contact time of 2 ms was used. A minimum of 330 scanswere collected for each sample. The recycle delay was adjusted toapproximately 1.5 T_(1H). The spectrum was referenced using an externalstandard of crystalline adamantane, setting its upfield resonance to29.5 ppm.

The ¹³C NMR peak positional reproducibility is +0.2 ppm.

IR Spectroscopy

Instrument Method: The IR spectra were acquired using a ThermoNicoletMagna 560 FT-IR spectrometer equipped with a KBr beamsplitter and ad-TGS KBr detector. A Specac Golden Gate Mk II single reflection diamondATR accessory was used for sampling. The spectra were collected at 4cm⁻¹ resolution with 100 co-added scans. The collection range was4000-650 cm⁻¹. Happ-Genzel apodization was used. No additional samplepreparation is needed with the ATR technique. Peaks were identifiedusing the ThermoNicolet Omnic 6.0a software peak picking algorithm.Generally, a Threshold value of 0 and a Sensitivity value of 90 wereused to make preliminary peak assignments. The output of automatedassignment was visually checked to ensure validity. Manual adjustmentswere made if deemed necessary. Additional peaks between 3200-2600 cm⁻¹,2400-1800 cm⁻¹ and 1800-650 cm⁻¹ were assigned at a Sensitivity of 100if appropriate. These settings were chosen such that unresolvedshoulders were not identified as separate peaks.

The IR peak positional reproducibility is ±2 cm⁻¹.

Raman Spectroscopy

Instrument Method: The Raman spectra were collected using aThermoNicolet 960 FT-Raman spectrometer equipped with a 1064 nm NdYAGlaser and InGaAs detector. Samples were analyzed in NMR tubes. Thespectra were collected using 1 W of laser power and 100 co-added scans.The collection range was 3700-100 cm⁻¹. Peaks were identified using theThermoNicolet Omnic 6.0a software peak picking algorithm. Generally, aThreshold value of 0 and a Sensitivity value of 90 were used to makepreliminary peak assignments. The output of automated assignment wasvisually checked to ensure validity. Manual adjustments were made ifdeemed necessary. Additional peaks between 3300-2500 cm⁻¹ and 1700-100cm⁻¹ were assigned at a Sensitivity of 100 if appropriate. Thesesettings were chosen such that unresolved shoulders were not identifiedas separate peaks. All spectra were recorded using 4 cm⁻¹ resolution andHapp-Genzel apodization. Wavelength calibration was performed usingpolystyrene.

The Raman peak positional reproducibility is ±2 cm⁻¹.

Thermogravimetry Analysis (TGA)

TGA was carried out on a TA Instruments 2950 thermogravimetric analyzer.The calibration standards were nickel and Alumel™. The sample was placedin an aluminum sample pan and inserted in the TG furnace. The sample wasfirst equilibrated at 25° C., and then heated under a stream of nitrogenat a heating rate of 10° C./min up to a final temperature of 350° C.

Differential Scanning Calorimetry

DSC Method A: DSC may be performed using a TA Instruments 2920differential scanning calorimeter. The sample is placed into an aluminumDSC pan and the weight is accurately recorded. The pan is covered with alid and then crimped. The sample cell is equilibrated at 25° C. andheated under a nitrogen purge at a rate of 10° C./min, up to a finaltemperature of 250° C. Indium metal is used as the calibration standard.Reported temperatures are at the transition maxima.

DSC Method B: DSC may also be performed on a Mettler AT 261 differentialscanning calorimeter. For DSC Method B, the sample is placed into analuminum DSC pan and the weight is accurately recorded. The pan iscovered with a lid and then crimped. The sample is equilibrated at 25°C. and heated under a nitrogen purge at a rate of 10° C./min up to afinal temperature of 150° C. Reported temperatures are at the transitionmaxima.

Preparation of Compound I

To a solution of 4-acetoxyacetophenone (1.0 eq) in dichloromethane on anice bath was added bromine (1.05 eq). The bromine was added slowly at 0°C. The ice bath was removed and stirring continued at the ambienttemperature until the reaction was complete (monitored by HPLC). Thereaction mixture was concentrated in vacuum to provide4-acetoxy-α-bromoacetophenone that was used without furtherpurification.

To a solution of 4-acetoxy-α-bromoacetophenone (1.0 eq) and sodiumbicarbonate (1.9 eq) in methanol/dichloromethane (8/1) at roomtemperature was added 4-chlorophenoxyaniline (1.0 eq). After thereaction was complete (as indicated by HPLC), the mixture was filtered,and the resulting aminoacetophenone derivative (yellow solid) was washedwith methanol, and dried in vacuum. The aminoacetophenone derivativethen was washed with water followed by methanol and dried under vacuumat 30-60° C.

To a solution of the aminoacetophenone derivative (1.0 eq),triethylamine (2.0 eq) in dichloromethane on an ice bath was addedvaleryl chloride (1.5 eq). The reaction was monitored by HPLC. After thereaction was complete, the mixture was allowed to warm to roomtemperature, and the solvents were removed under vacuum. Ethylacetatewas added to dissolve theN-(4-chlorophenoxyphenyl)-N-(4-acetoxybenzoylmethyl)-n-pentanamideproduct, and the solution was filtered. Ethylacetate was removed invacuum to obtain the product as a yellow liquid which was used withoutfurther purification.

A solution of theN-(4-chlorophenoxyphenyl)-N-(4-acetoxybenzoylmethyl)-n-pentanamide (1.0eq) in acetic acid and ammonium acetate was heated at 100-110° C. Afterthe reaction was complete (indicated by HPLC), the mixture was cooledand added to chilled water. The resulting solid was filtered, washedwith water, air dried, then washed with diethylether followed byethylacetate, air dried and finally dried in vacuum at 30-60° C. to give4-{1-[4-(4-chlorophenoxy)phenyl]-2-(1-butyl)-1H-imidazol-4-yl}phenol.

In the final step, COMPOUND I was synthesized by the alkylation of4-(1-[4-(4-chlorophenoxy)phenyl]-2-(1-butyl)-1H-imidazol-4-yl)phenolwith 3-diethylamino-1-chloro-propane in the presence of potassiumcarbonate.

The 3-diethylamino-1-chloropropane was synthesized by the reaction of3-diethylamino-1-propanol (1.0 eq) with thionyl chloride (2.0 eq) inchloroform. The product was extracted in diethyl ether, and the solventwas removed under vacuum and purified by distillation.

The 4-(1-[4-(4-chlorophenoxy)phenyl]-2-(1-butyl)-1H-imidazol-4-yl)phenol(1.0 eq) and the 3-diethylamino-1-chloropropane (1.05 eq) were refluxedin acetone in the presence of potassium carbonate (1.5 eq). After thereaction was complete (indicated by HPLC), the mixture was cooled toroom temperature and filtered. The filtered solution was concentratedunder vacuum, and COMPOUND I may be precipitated with hexane, filtered,and dried in vacuum. The product may be further purified by dissolvingin ethyl acetate, washing with sodium carbonate solution followed bysodium chloride solution. The organic layer may then be dried withmagnesium sulfate. The ethyl acetate may then be removed under vacuumand COMPOUND I dried under vacuum at a temperature above or below thetemperature at which a liquid phase is formed.

The filtered solution may also be precipitated from acetone/hexane. Thecollected precipitate may then be dissolved in methanol and precipitatedby the addition of water, followed by filtration and drying under vacuumat a temperature below the temperature at which a liquid phase isformed.

Form I

Form I of COMPOUND I can be prepared according to the following method.

A 3 kg lot of COMPOUND I was prepared via the synthesis described inExample B, where the final step involves precipitation of COMPOUND Ifrom hexanes, then dissolving in ethyl acetate and subsequent removal ofresidual ethyl acetate in vacuo at 70° C. At this temperature a liquidphase is formed. The liquid COMPOUND I was poured into trays for dryingand removal of solvent. Upon cooling to room temperature, the solidCOMPOUND I was broken into pieces and milled using a mortar and pestleto provide Form I.

Form I was characterized by X-ray powder diffraction (XRPD), infraredspectroscopy, solid state ¹³C NMR, Raman spectroscopy, differentialscanning calorimetry (DSC), and thermogravimetric analysis.

Crystalline Form I is characterized by the following X-ray powderdiffraction pattern expressed in terms of the degree 2θ and relativeintensities with a relative intensity of ≧3.4% measured on a BrukerD5000 diffractometer with CuKα radiation:

X-ray Powder Diffraction Peaks for Crystalline Form I Angle Relative(Degree 2θ) Intensity* % 4.6 5.7 5.5 3.9 6.8 67.0 9.1 12.3 10.2 35.411.2 4.5 11.6 8.3 13.1 3.4 13.7 21.9 14.6 5.3 15.0 6.3 15.4 5.9 15.910.8 16.5 16.5 17.4 70.6 18.4 11.5 19.0 13.9 20.7 100.0 21.3 77.3 21.737.4 22.4 22.0 22.8 11.2 23.1 8.2 23.4 8.2 23.7 7.8 24.2 8.0 24.7 32.824.9 37.5 25.3 30.1 26.3 28.9 26.8 9.5 27.2 10.6 28.0 9.5 29.8 7.9 30.96.8 32.1 11.0 33.0 6.0 34.1 8.4 34.8 5.9 37.3 9.5 38.0 4.9 38.7 5.8 *Therelative intensities may change depending on the crystal size andmorphology.

Representative values of degree 2θ for Form I are 13.1, 16.5, 22.4 and26.8. Particularly representative values of degree 2θ for Form I are16.5 and 26.8.

Crystalline Form I is characterized by the following ¹³C Solid State NMRshifts.

¹³C chemical shifts of Form I ¹³C Chemical Shifts^(a) [ppm]Intensity^(b) 158.7 8.6 157.9 10.6 153.0 8.2 149.7 9.4 141.0 8.5 132.410.1 131.4 8.9 127.6 12.0 125.9 4.5 125.0 5.0 117.4 3.3 114.2 6.3 110.82.0  65.6 8.0  52.0 8.5  46.6 4.6  33.8 8.3  27.6 11.4 27.2 shoulder — 24.1 10.4 16  11.9  13.9 10.2 ^(a)Referenced to external sample ofsolid phase adamantane at 29.5 ppm. ^(b)Defined as peak heights.Intensities can vary depending on the actual setup of the CPMASexperimental parameters and the thermal history of the sample. CPMASintensities are not necessarily quantitative.

Representative ¹³C NMR chemical shifts for Form I are as follows:

Form I ¹³C Chemical Shifts [ppm] 157.9 153.0 149.7 141.0 131.4 33.8 27.613.9

Form I is characterized by the following FT-IR peaks:

FT-IR Peak List of Form I Wavelength (cm⁻¹) 652 675 697 715 749 777 829853 870 898 919 945 958 1016 1067 1086 1105 1162 1200 1223 1236 12791294 1318 1353 1379 1408 1429 1444 1465 1486 1503 1563 1576 1588 16171882 1899 1981 2051 2163 2276 2324 2391 2672 2731 2803 2813 2869 29002927 2961 3033 3061 3093 3133

Representative FT-IR peaks for Form I are as follows:

Form I Wavenumber (cm⁻¹) 697 870 1016 1223

Form I is characterized by the following Raman peaks:

Representative Raman Peaks of Form I 139 192 198 208 217 266 293 335 371389 422 448 475 511 525 571 620 633 653 677 698 724 753 787 798 821 834855 871 880 898 947 1004 1010 1024 1055 1075 1088 1106 1170 1197 12501274 1293 1318 1354 1362 1410 1430 1444 1497 1510 1563 1586 1618 25712871 2902 2932 2962 3063

Particularly representative Raman peaks for Form I are as follows:

Form I Wavenumber (cm⁻¹) 266 293 335 653 787 1497

Thermogravimetric analysis showed negligible weight loss ofapproximately 0.1% wt/wt or less from 25 to 250° C., as shown in FIG. 9.

At a ramp speed of 10° C./min using DSC Method A and a sample size of5.31 mg, the DSC profile of a first batch of Form I displayed anendothermic peak at 60.1° C.

At a ramp speed of 10° C./min using DSC Method B and a sample size of4.86 mg, the DSC profile of a second batch of Form I displayed anendothermic peak at 62.8° C.

Form II

Form II of COMPOUND I can be prepared according to the followingmethods.

Form II was prepared by dissolving COMPOUND I (2 g) in 1 mL of methanol.To this solution, 3 mL of distilled water was added, and precipitationwas observed as soon as water was added. The solution was kept at roomtemperature overnight. The solid was filtered and dried under vacuum forabout 4 hours. The solid was further dried in Genevac vacuum oven at 2millibar at 40° C. for 60 hours to provide Form II (1.7 g).

Form II was also prepared by dissolving COMPOUND I (2 g) in 6 mL ofacetone, and the solution was heated for 20 min. The acetone was removedas much as possible by evaporation. To this residue, 2 mL of reagentalcohol (90% ethanol, 5% methanol, and 5% isopropanol) was addedfollowed by addition of 6 mL of water. Precipitation was observed assoon as water was added. The solution was kept in the freezer overnight.The solid COMPOUND I was filtered, washed with water and dried inGenevac vacuum oven at 2 millibar at 35° C. for 80 hours. A portion ofthe resulting solid COMPOUND I (200 mg) was heated until formation ofliquid phase and further dried at 60° C. for 6 hours to provide Form II.

Form II was also prepared by dissolving COMPOUND I (30 g) in 30 mL ofacetone, and the solution was heated for 20 min. The acetone was removedas much as possible by evaporation. To the residue, 30 mL of reagentalcohol was added followed by addition of 90 mL of water. Precipitationwas observed as soon as water was added. The solution was kept at roomtemperature for 30 hours. The solid COMPOUND I was filtered, dried undervacuum for about 4 hours, and dried in Genevac vacuum oven at 2 millibarat 40° C. for 100 hours to provide Form II (26.0 g).

Form II was also prepared by dissolving COMPOUND I (2 g) in 1 mL ofmethanol, and the solution was cooled in an ice bath. To this solution,3 mL of distilled water was slowly added while stirring. Stirringcontinued at room temperature for a few more hours. The solid COMPOUND Iwas filtered and dried in vacuum oven at 50° C. for 36 hours to provideForm II (1.7 g).

Form II was characterized by X-ray powder diffraction (XRPD), infraredspectroscopy, solid state ¹³C NMR, Raman spectroscopy, differentialscanning calorimetry (DSC), and thermogravimetric analysis.

Crystalline Form II is characterized by the following X-ray powderdiffraction pattern expressed in terms of the degree 2θ and relativeintensities with a relative intensity of ≧6.0% measured on a BrukerD5000 diffractometer with CuKα radiation:

X-ray Powder Diffraction Peaks for Crystalline Form II Angle (DegreeRelative 2-θ) Intensity* % 4.5 17.8 6.7 63.3 9.1 14.1 10.0 10.8 10.312.4 11.0 6.0 11.6 15.1 12.5 7.0 13.6 14.0 14.5 11.2 15.1 29.9 15.7 15.017.5 40.4 18.3 41.8 18.8 87.1 19.7 9.8 20.1 34.5 20.6 84.4 21.0 15.621.6 100.0 22.1 36.3 22.7 20.8 23.1 52.0 23.6 77.1 24.3 17.7 24.8 12.425.5 14.4 25.8 17.0 26.2 59.1 27.3 17.5 28.2 12.8 28.7 6.8 29.5 26.930.0 7.4 30.4 6.9 31.2 6.8 31.6 7.3 32.1 16.7 32.5 9.8 32.9 8.5 33.212.5 33.7 9.0 34.3 8.4 35.2 7.3 35.7 7.6 37.4 7.8 38.3 10.4 39.6 9.6*The relative intensities may change depending on the crystal size andmorphology.

Representative values of degree 2θ for Form II are 18.8 and 20.1.

Form II is characterized by the following ¹³C Solid State NMR chemicalshifts:

¹³C chemical shifts of Form II ¹³C Chemical Shifts^(a) [ppm]Intensity^(b) 158.6 5.0 153.6 12.0 149.0 6.1 140.1 5.7 133.0 6.1 132.33.6 128.9 5.4 127.6 5.4 126.8 6.5 125.6 8.0 123.2 4.1 121.6 5.3 119.95.1 114.4 8.4 110.5 3.9 67.4 3.5 51.8 1.7 29.6 5.4 28.6 6.7 23.8 4.115.5 6.1 9.4 1.7 ^(a)Referenced to external sample of solid phaseadamantane at 29.5 ppm. ^(b)Defined as peak heights. Intensities canvary depending on the actual setup of the CPMAS experimental parametersand the thermal history of the sample. CPMAS intensities are notnecessarily quantitative.

Representative chemical shifts for Form II are as follows:

Form II ¹³C Chemical Shifts [ppm] 153.6 149.0 140.1 123.2 121.6 119.928.6

Form II is characterized by the following FT-IR peaks:

FT-IR Peak Lists of Form II Wavelength (cm⁻¹) 660 675 690 707 717 735750 762 783 816 824 836 848 877 899 916 928 945 969 1004 1024 1046 10621075 1088 1105 1115 1135 1159 1178 1202 1239 1274 1290 1316 1325 13681395 1412 1425 1455 1462 1482 1502 1563 1576 1587 1617 1773 1898 19812022 2038 2052 2070 2164 2191 2259 2288 2324 2677 2725 2774 2783 28232865 2881 2898 2926 2950 2958 3030 3047 3061 3078 3090 3140

Representative FT-IR peaks for Form II are as follows:

Form II Wavenumber (cm⁻¹) 660 707 735 816 969 1024 1046 1135 1178

Form II is characterized by the following Raman peaks:

Representative Raman Peaks of Form II 137 156 193 257 277 300 326 374395 419 435 443 465 474 483 506 520 536 567 590 621 634 646 660 676 693708 722 750 772 795 825 837 852 878 900 915 947 1005 1027 1061 1089 11061134 1160 1180 1196 1223 1243 1277 1298 1324 1348 1370 1412 1441 14541467 1507 1563 1575 1589 1617 2728 2783 2825 2868 2879 2917 2931 29573014 3031 3066 3137 3174 3226

Particularly representative Raman peaks for Form II are as follows:

Form II Wavenumber (cm⁻¹) 257 300 326 590 646 1180 1348 1370

Thermogravimetric analysis showed negligible weight loss ofapproximately 0.1% wt/wt or less from 25 to 250° C., as shown in FIG.10.

At a ramp speed of 10° C./min using DSC Method A and a sample size of4.87 mg, the DSC profile of a first batch of Form II displayed anendothermic peak at 58.9° C.

At a ramp speed of 10° C./min using DSC Method B and a sample size of6.38 mg, the DSC profile of a second batch of Form II displayed anendothermic peak at 62.5° C.

Various embodiments of the invention have been described in fulfillmentof the various objects of the invention. It should be recognized thatthese embodiments are merely illustrative of the principles of thepresent invention. Numerous modifications and adaptations thereof willbe readily apparent to those skilled in the art without departing fromthe spirit and scope of the present invention.

1. A polymorph of COMPOUND I, Form I, having a solid state ¹³C NMRspectrum comprising peaks at 149.7 and 141.0 ppm.
 2. The polymorph ofclaim 1, having a solid state ¹³C NMR spectrum comprising peaks at153.0, 149.7, 141.0, 27.6, and 13.9 ppm.
 3. The polymorph of claim 2,having a solid state ¹³C NMR spectrum comprising peaks at 157.9, 153.0,149.7, 141.0, 131.4, 33.8, 27.6, and 13.9 ppm.
 4. The polymorph of claim1, having an IR spectrum comprising peaks at 1016 and 1223 cm⁻¹.
 5. Thepolymorph of claim 4, having an IR spectrum comprising peaks at 697,870, 1016 and 1223 cm⁻¹.
 6. The polymorph of claim 1, having a Ramanspectrum comprising peaks at 335 and 787 cm⁻¹.
 7. The polymorph of claim6, having a Raman spectrum comprising peaks at 266, 293, 335, 653, 787and 1497 cm⁻¹.
 8. A polymorph of COMPOUND I, Form I, having X-ray powderdiffraction peaks expressed in degrees-2θ at 16.5 and 26.8.
 9. Thepolymorph of claim 8, having X-ray powder diffraction peaks expressed indegrees-2θ at 13.1, 16.5, 22.4 and 26.8.
 10. The polymorph of claim 8,having an IR spectrum comprising peaks at 1016 and 1223 cm⁻¹.
 11. Thepolymorph of claim 10, having an IR spectrum comprising peaks at 697,870, 1016 and 1223 cm⁻¹.
 12. The polymorph of claim 8, having a Ramanspectrum comprising peaks at 335 and 787 cm⁻¹.
 13. The polymorph ofclaim 12, having a Raman spectrum comprising peaks at 266, 293, 335,653, 787 and 1497 cm⁻¹.
 14. A polymorph of COMPOUND I, Form I, having aRaman spectrum comprising peaks at 335 and 787 cm⁻¹.
 15. The polymorphof claim 14, having a Raman spectrum comprising peaks at 266, 293, 335,653, 787 and 1497 cm⁻¹.
 16. The polymorph of claim 1, 8, or 14,substantially free of Form II.
 17. A form of Compound I comprising 50%or more by weight of Form I of Compound I in claim 1, 8, or
 14. 18. Theform of Compound I of claim 17 comprising at least 55, 60, 65, 70, 75,80, 85, 90, 91, 92, 93, 94, 95, 96, 97, 98, or 99% by weight of Form I.19. The form of Compound I of claim 17, wherein the form is crystalline.20. A polymorph of COMPOUND I, Form II, having a solid state ¹³C NMRspectrum comprising peaks at 153.6, 140.1 and 119.9 ppm.
 21. Thepolymorph of claim 20, having a solid state ¹³C NMR spectrum comprisingpeaks at 153.6, 149.0, 140.1, 119.9, and 28.6 ppm.
 22. The polymorph ofclaim 21, having a solid state ¹³C NMR spectrum comprising peaks at153.6, 149.0, 140.1, 123.2, 121.6, 119.9, and 28.6 ppm.
 23. Thepolymorph of claim 20, having an IR spectrum comprising peaks at 816,1046 and 1178 cm⁻¹.
 24. The polymorph of claim 23, having an IR spectrumcomprising peaks at 660, 707, 735, 816, 969, 1024, 1046, 1135 and 1178cm⁻¹.
 25. The polymorph of claim 20, having a Raman spectrum comprisingpeaks at 300 and 1180 cm⁻¹.
 26. The polymorph of claim 25, having aRaman spectrum comprising peaks at 257, 300, 326, 590, 646, 1180, 1348and 1370 cm⁻¹.
 27. A polymorph of COMPOUND I, Form II, having X-raypowder diffraction peaks expressed in degrees-2θ at 18.8 and 20.1. 28.The polymorph of claim 27, having an IR spectrum comprising peaks at816, 1046 and 1178 cm⁻¹.
 29. The polymorph of claim 28, having an IRspectrum comprising peaks at 660, 707, 735, 816, 969, 1024, 1046, 1135and 1178 cm⁻¹.
 30. The polymorph of claim 27, having a Raman spectrumcomprising peaks at 300 and 1180 cm⁻¹.
 31. The polymorph of claim 30,having a Raman spectrum comprising peaks at 257, 300, 326, 590, 646,1180, 1348 and 1370 cm⁻¹.
 32. A polymorph of COMPOUND I, Form II, havinga Raman spectrum comprising peaks at 300 and 1180 cm⁻¹.
 33. Thepolymorph of claim 32, having a Raman spectrum comprising peaks at 257,300, 326, 590, 646, 1180, 1348 and 1370 cm⁻¹.
 34. The polymorph of claim20, 27, or 32, substantially free of Form I.
 35. A form of Compound Icomprising 50% or more by weight of Form II of Compound I in claim 20,28, or
 32. 36. The form of Compound I of claim 35 comprising at least55, 60, 65, 70, 75, 80, 85, 90, 91, 92, 93, 94, 95, 96, 97, 98, or 99%by weight of Form II.
 37. The form of Compound I of claim 35, whereinthe form is crystalline.
 38. A form of Compound I comprising a mixtureof Form I and Form II, wherein the ratio of Form I to Form II by weightis between 9:1 and 1:9, respectively.
 39. The form of Compound I inclaim 38, wherein the ratio of Form I to Form II by weight is 9:1, 8:2,7:3, 6:4, 5:5, 4:6, 3:7, 2:8, or 1:9, respectively.
 40. A method ofproducing a polymorph of COMPOUND I comprising: heating COMPOUND I untilformation of a liquid phase in a partial vacuum for a period; andcooling COMPOUND I to below the temperature at which the liquid phase isformed.
 41. The method of claim 40, wherein COMPOUND I is heated toabout 70° C.
 42. The method of claim 40, wherein the polymorph ofCOMPOUND I is Form I.
 43. A method of producing a polymorph of COMPOUNDI comprising: (a) dissolving COMPOUND I in a solvent system comprisingan alcoholic solvent; (b) adding a precipitating solvent to the solventsystem such that COMPOUND I precipitates from the solvent system; and(c) recovering the precipitate from the solvent system.
 44. The methodof claim 43, wherein the alcoholic solvent is selected from the groupconsisting of methanol, ethanol, isopropanol, and mixtures thereof. 45.The method of claim 43, wherein the precipitating solvent compriseswater.
 46. The method of claim 43, wherein the polymorph of COMPOUND Iis Form II.